Performance Studies of a Single Vertical Beam Halo Collimation System at ATF2

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N. Fuster-Martínez, A. Faus-Golfe
IFIC, Valencia, Spain

P. Bambade, A. Faus-Golfe, S. Wallon, R.J. Yang
LAL, Orsay, France

K. Kubo, T. Okugi, T. Tauchi, N. Terunuma
Sokendai, Ibaraki, Japan

K. Kubo, T. Okugi, T. Tauchi, N. Terunuma
KEK, Ibaraki, Japan

I. Podadera, F. Toral
CIEMAT, Madrid, Spain

Funding:Work supported by IDC-20101074, FPA2013-47883-C2-1-P and ANR-11-IDEX-0003-02In order to reduce the background that could limit the precision of the diagnostics located in the ATF2 post-IP beamline, a single vertical beam halo collimation system was installed in March 2016. In this paper we present the measurements done in March and May 2016 in order to characterize the collimation system performance. Furthermore, the collimator wakefield impact has also been measured and compared with theoretical calculations and numerical simulations in order to determine the most efficient operation mode of the collimation system in terms of halo cleaning and negligible wakefield impact.